<html>

<head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
    <title>小黑记事本</title>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
    <meta name="robots" content="noindex, nofollow" />
    <meta name="googlebot" content="noindex, nofollow" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" type="text/css" href="./css/index.css" />
</head>

<body>
    <!-- 主体区域 -->
    <section id="todoapp">
        <!-- 输入框 -->
        <header class="header">
            <h1>小黑记事本</h1>
            <input v-model="message" @keyup.enter="fun" autofocus="autofocus" autocomplete="off" placeholder="请输入任务" class="new-todo" />
        </header>
        <!-- 列表区域 -->
        <section class="main">
            <ul class="todo-list" v-for="(item,index) in lis">
                <li class="todo">
                    <div class="view">
                        <span class="index">
                          {{index+1}}
                        </span>
                        <label>
                          {{item}}
                        </label>
                        <button class="destroy" @click="delOne(index)"></button>
                    </div>
                </li>
            </ul>
        </section>
        <!-- 统计和清空 -->
        <footer class="footer">
            <span class="todo-count">
        <strong>
          {{lis.length}}
        </strong> items left
      </span>
            <button class="clear-completed" @click="clear">
        Clear
      </button>
        </footer>
    </section>
    <!-- 底部 -->
    <footer class="info">
        <p>
            <a href="http://www.itheima.com/"><img src="./img/black.png" alt="" /></a>
        </p>
    </footer>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var todoapp = new Vue({
            el: '#todoapp',
            data: {
                message: '吃饭饭',
                lis: [],
            },
            methods: {
                fun: function() {
                    this.lis.push(this.message)
                },
                clear: function() {
                    this.lis = []
                },
                delOne: function(index) {
                    this.lis.splice(index, 1)
                }
            }
        })
    </script>
</body>

</html>